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1.Remarkable Plasticity: As a condition of blending where amount of cement and collapsibility are fixed aforehand, mixing water can be decreased by 17-25% when it is admixed with reinforced concrete at 0.5-1.0%. Statistically, compression strength on the lst day, the 3 rd day and the 28 th day after single application is increased by 60-95% and 25-50% respectively when it is added at standard blend dosage. As a result, compression strength, tensile strength, buckling strength and modulus of elasticity will be improved to some extent.2. Improve miscibility of concrete amalgamator with water and collapsibility as well. As a condition of equivalent blending, collapsibility can be increased 4-7 times when it is added at 0.7% blend dosage.3. 15-18% of cement can be reserved when the agent is blended at 0.7% blend dosage, which is preconditioned by same collapsibility and strength.
PARAMETERS & ACCEPTANCE CRITERLA
model item | NSF-B |
net starch fluidity (mm ) | ≥ 240 |
content of Cl (%) | 0.4 |
PH value | 7-9 |
surface tension(N/m) | (7 1 ± 1) × 10 -3 |
solids content(%) | ≥ 92 |
Na 2 SO 4 content(%) | ≤10 |
PARAMETERS & ACCEPTANCE CRITERIA FOR REFERENCE
Parameters | Criteria | Actual Results | Parameters | Criteria | Actual Results | ||
Water Reduction, % | ≥ 19 | 19.5 | Compression strength, % | 1d | ≥ 180 | 200 | |
Water Penetration, % | ≤ 90 | 79 | 3d | ≥ 170 | 194 | ||
Air Content, % | ≤ 2.0 | 1.6 | 7d | ≥ 150 | 161 | ||
Temporal Distribution for setting (min) | Initial setting time | -9 0 +120 | +20 | 28d | ≥ 130 | 142 | |
Terminal setting time | +13 | Shrinkage, % | 28d | ≤ 130 | 125 | ||
Corrosion to steel bars | None | None | |||||
Note: Standard Blend Dosage:0.7 %(as cement amount) | |||||||
NSF-B Naphthalene sulphonate formaldehyde